Lake Horea () is a natural salt lake in the town of Ocna Sibiului, Sibiu County, in the historical Transylvania region of Romania. It is one of the many lakes of the Ocna Sibiului mine, a large salt mine which has one of the largest salt reserves in Romania. It is one of the three lakes of the mine's strand, the other ones being Lake CriÃÂan and Lake CloÃÂca.
The lake was named after Vasile Ursu Nicola, commonly known as Horea, who was a Transylvanian Romanian leader of the Revolt of Horea, CloÃÂca and CriÃÂan in 1784-85.
Lakes Horea, CloÃÂca, and CriÃÂan were formed by the flood of six non-certified salines. Other lakes were mentioned in their place in 1770.